in ZCS I miss per-domain admin level, since we use Zimbra for webhosting purpose. Having hundreds of clients makes it quite annoying to manage all accounts manually.
So I think about building up some PHP script, or better, PHP-driven user interface, which would enable per-domain accounts administration.

Any idea how to start?
Should I go into SH scripts, controlling zmprov?
Or better to go API?
Or some other method.

Any ideas welcome.